CN113069898B

CN113069898B - Compressed air drying system and drying method thereof

Info

Publication number: CN113069898B
Application number: CN202110488751.2A
Authority: CN
Inventors: 不公告发明人
Original assignee: Sichuan Danfu Environmental Technology Co ltd
Current assignee: Sichuan Danfu Environmental Technology Co ltd
Priority date: 2021-05-06
Filing date: 2021-05-06
Publication date: 2022-10-14
Anticipated expiration: 2041-05-06
Also published as: CN113069898A

Abstract

The invention relates to a compressed air drying system and a drying method thereof, comprising an outer body with a first inner cavity, an inner body which is arranged in the first inner cavity and is provided with a second inner cavity, and a discharge part which is arranged on the outer body, wherein the discharge part is at least provided with a discharge cavity communicated with the inner body, a control valve is arranged in the discharge cavity, a backflow cavity is formed between the inner body and the outer body, a backflow port communicated with the backflow cavity is arranged on the inner body, the inner body is provided with an air inlet part and an exhaust gas outlet part, and an adsorbent and a retractable air inlet unit are arranged in the second inner cavity; the air inlet part and the waste gas discharge part respectively comprise an air pipe communicated with the second inner cavity and an electromagnetic valve arranged on the air pipe, and the input end of the air inlet unit is communicated with the air pipe and can be expanded when the second inner cavity is used for air inlet to increase the air outlet surface; the invention has the advantages that the compressed air can be dried, the adsorbent can be cleaned, and new adsorbent addition is completed in the cleaning process.

Description

Compressed air drying system and drying method thereof

Technical Field

The invention relates to the technical field of air drying, in particular to a compressed air drying system and a drying method thereof.

Background

At present, compressed air refers to air compressed by external force, and because compressed air can be widely used as various 'identities' such as a power source, at present, when the compressed air is used, the compressed air needs to be adsorbed (for example, dried) so as to ensure the using effect of the compressed air, at present, a drying system for the compressed air cannot be self-cleaned, and under the long-term use, an adsorbent in the compressed air is adsorbed for a long time, so that the adsorption effect of the adsorbent is reduced, and the adsorption effect of the adsorbent on the compressed air is further influenced.

Disclosure of Invention

In view of the shortcomings of the prior art, the present invention provides a compressed air drying system and a drying method thereof, which aims to solve the problems in the prior art.

The technical scheme of the invention is realized as follows: a compressed air drying system, characterized by: the exhaust device comprises an outer body with a first inner cavity, an inner body arranged in the first inner cavity and provided with a second inner cavity, and an exhaust part arranged on the outer body, wherein the exhaust part is at least provided with an exhaust cavity communicated with the inner body, a control valve is arranged in the exhaust cavity, a backflow cavity is formed between the inner body and the outer body, a backflow port communicated with the backflow cavity is arranged on the inner body, the inner body is provided with an air inlet part and an exhaust gas outlet part, and an adsorbent and a retractable air inlet unit are arranged in the second inner cavity; the air inlet part and the waste gas exhaust part comprise air pipes communicated with the second inner cavity and electromagnetic valves arranged on the air pipes, the input end of the air inlet unit is communicated with the air pipes, and the air inlet unit can be expanded when air enters the second inner cavity and used for increasing the air outlet surface.

Preferably: the unit of admitting air including install in at the bottom of the second inner chamber plc motor, through plc motor drive's lead screw, locate on the lead screw and with it complex screw rod seat and go out the air cover, wherein, it includes that a plurality of cross-sectional diameter reduces gradually and the surface is equipped with the cover body of filtration pore from the extending direction of lead screw to go out the air cover, filtration pore on the cover body constitutes go out the gas face, each cover body is equal sets up and sliding connection with the axle center, just the top position of the inner wall of the cover body is equipped with first spacing ring, and the bottom position of cover body outer wall be equipped with first spacing ring complex second spacing ring, the cover body that is located the inner circle is equipped with a through-hole that supplies the lead screw to pass and this cover body is connected with the screw rod seat.

Preferably, the following components are used: the inner body comprises a base which is rotationally connected to the bottom of the first cavity through a rotating shaft and is controlled by a driving part, and a container body which is arranged on the base; the base is internally provided with a main cavity which is coaxially arranged with the base and a plurality of auxiliary cavities which are circumferentially distributed at intervals by taking the main cavity as a center, one end of each auxiliary cavity is communicated with the main cavity, the other end of each auxiliary cavity extends to the top end face of the base, and the auxiliary cavities are internally provided with one-way valves; the container body is internally provided with an adsorption cavity, the cross section area of the adsorption cavity is gradually enlarged from top to bottom, and the inner wall of the adsorption cavity is provided with a plurality of clearance grooves which are circumferentially distributed and axially extend and correspond to the auxiliary cavities one by one; the top of the container body is provided with an air outlet pipe communicated with the adsorption cavity and the discharge cavity, any end of the air outlet pipe is rotatably connected with the container body or the discharge part, and the reflux port is formed in the container body.

Preferably: the container body is composed of a plurality of arc plates which are sequentially connected, each arc plate protrudes inwards along the radial direction of the container body, and a gap formed between every two adjacent arc plates is the gap groove.

Preferably: the rotating shaft is internally provided with a cavity which extends axially, two ends of the cavity respectively penetrate through two ends of the rotating shaft, one end of the cavity is communicated with the main cavity, bearings are arranged at the other end of the rotating shaft and the matching position of the rotating shaft and the outer body, the other end of the rotating shaft is matched with the air pipe through the bearings, the air pipe comprises a main air pipe which is rotatably connected with the rotating shaft through the bearings, and an air inlet pipe and an exhaust gas outlet pipe which are respectively communicated with the main air pipe, the electromagnetic valves are arranged on the air inlet pipe and the exhaust gas outlet pipe, the air inlet pipe, the main air pipe and the electromagnetic valves form the air inlet part, and the exhaust gas outlet pipe, the main air pipe and the electromagnetic valves form the exhaust gas outlet part.

Preferably, the following components are used: the drive part including install in epaxial first drive wheel of commentaries on classics, with the pivot is connected and is passed through motor drive's second drive wheel through transmission shaft and arbitrary synchronizing wheel as central circumference interval distribution's synchronizing wheel, wherein, the transmission is connected with driving belt between first drive wheel and the second drive wheel, and the transmission is connected with synchronous belt between each synchronizing wheel, and install the jet-propelled part that is located between the adjacent synchronizing wheel on the synchronous belt.

Preferably: the air injection part comprises supporting parts which are arranged on the synchronous belt and are arranged in a hollow way and extend towards the inner body in the radial direction, nozzles arranged on the supporting parts and an air supply source used for providing hot dry air for the supporting parts; an annular slide rail is arranged in the first inner cavity, and a telescopic rod matched with the annular slide rail is arranged on the supporting part.

Preferably: still including install in material on the backward flow mouth supplyes the subassembly, the material supplyes the subassembly include the main part, form in the main part and have the material passageway of output and input, at least one locate in the main part and with the auxiliary material entry, at least one of material passageway intercommunication locate in the material passageway and divide the material passageway into the spacer block in a plurality of auxiliary material chamber, locate opening and a plurality of on the spacer block are located the auxiliary material intracavity is used for sealing auxiliary material entry or opening and through the piston of electromagnetic component control.

Preferably: the partition block comprises a partition block body which is provided with the opening and is arranged at intervals with the top of the material channel and the bottom of the material channel, and sealing blocks which are connected with two ends of the partition block body and are respectively connected with the top of the material channel in a sealing way and the bottom of the material channel in a sealing way; the opening and the auxiliary material inlet are coaxially arranged; the electromagnetic assembly comprises a piston and an electromagnet, one end of the piston penetrates through the opening, and the other end of the piston is located between the opening and the auxiliary material inlet.

In addition, the invention also provides a drying method of compressed air, which uses the compressed air drying system and is characterized by comprising the following steps:

s1: firstly, filling an adsorbent into a second inner cavity, opening an electromagnetic valve on an air inlet pipe and a control valve on a discharge cavity, closing an electromagnetic valve on an exhaust gas discharge pipe, and introducing gas to be dried into an air inlet unit through the air inlet pipe and a main air pipe;

s2: then, a plc motor drives the screw rod and drives the screw rod seat to ascend on the screw rod, and drives the cover body located at the innermost circle to ascend, and meanwhile, as the cover bodies are matched through the first limiting ring and the second limiting ring, when the cover body located at the innermost circle ascends, the cover bodies can be driven to ascend and sequentially expand, gas entering the gas inlet unit can be discharged through the filter holes in the cover bodies, the gas outlet efficiency is improved, and the gas is adsorbed by an adsorbent;

s3: after the adsorption of the adsorbent, part of the gas enters the reflux cavity through the reflux port, and the other part of the gas is discharged into the discharge cavity through the gas outlet pipe and further discharged through the discharge cavity;

s4: after drying is finished, opening the electromagnetic valve on the waste gas discharge pipe, closing the electromagnetic valve on the gas inlet pipe and the control valve on the discharge cavity, and at the moment, gas in the backflow cavity enters the second inner cavity again through the backflow port and water molecules in the second inner cavity are discharged from the waste gas discharge pipe, so that self-cleaning of the adsorbent is finished; meanwhile, the lead screw is driven by the plc motor and drives the lead screw seat to descend on the lead screw, and the cover bodies positioned at the innermost circle descend due to the gravity of each cover body and contract each cover body, so that the gas in the backflow cavity can conveniently flow back to the second inner cavity;

in step S4, firstly, the motor drives the second driving wheel and any synchronizing wheel to rotate forward, and drives the first driving wheel to rotate through the driving belt and drives each synchronizing wheel to rotate through the synchronizing belt, so as to drive the container body to rotate, and when the centrifugal force generated by the rotation of the container body is utilized to guide water molecules to the inner wall of the container body and introduce hot air into the container body at the backflow port, the water molecules can be discharged from the clearance groove and the auxiliary cavity, and simultaneously when the synchronizing belt moves, the support body portion is driven to move, the nozzles on the support portion provide hot dry air through the air supply source, and the hot dry air generates rotational flow under the movement of the support body to dry the container body, so as to further discharge the water molecules contained in the adsorbent; and then the motor drives the second driving wheel and any synchronous wheel to rotate reversely, the electromagnet is electrified while rotating reversely, the piston is enabled to descend to open the auxiliary material inlet, new drying agent enters the material channel from the auxiliary material inlet, and the new drying agent is supplemented into the container body when gas flows in the material channel.

The invention has the beneficial effects that:

1) In the present invention, the sorbent of the present invention may be placed into the second lumen (i.e.: in the container body), the air to be purified is introduced into the container body, and is discharged after the adsorption treatment of the adsorbent, part of the discharged air enters the backflow cavity for packaging, and the other part of the discharged air is directly discharged and utilized by other equipment, and after the adsorption procedure is finished, the air in the backflow cavity flows back into the container body, and water molecules in the container body are discharged from the waste gas discharge port, so that the 'cleaning' of the adsorbent is achieved, and the adsorption effect of the adsorbent is ensured;

2) In order to improve the treatment effect of water molecules contained in the adsorbent, the container body can be driven to rotate by the motor, the water molecules in the adsorbent are thrown to the inner wall of the container body by the rotating centrifugal force (the condition is suitable for the condition that the adsorbent is wet), and the discharge efficiency of the water molecules can be accelerated by matching with the air flow introduced into the container body;

3) Furthermore, in order to improve the drying effect of the adsorbent, hot dry air can be introduced into the backflow cavity by using an air supply source, the synchronous belt moves to drive the supporting part to move, the rotational flow is generated in the backflow cavity by matching with the air injection of the nozzle, the drying effect of the adsorbent can be accelerated by moving the rotational flow around the container body, and the container body is arranged to be composed of a plurality of arc-shaped plates: compared with other shapes, the clearance groove has the guide effect, improves the discharge efficiency of the water molecules, can also improve the contact area of the rotational flow and the container body, and improves the drying effect on the adsorbent;

4) Moreover, in order to ensure the drying effect on the compressed air, the invention can add new drying agent into the container body in the process of drying the adsorbent in the container body, thereby not only ensuring the drying effect, but also enabling the feeding mode to be more flexible, and being worth explaining that: when the materials are added, the container body can be repeatedly rotated forwards and backwards, so that new drying agents added into the container body can be mixed with old drying agents, the new drying agents are positioned at various positions of the container body, and the drying effect of the new drying agents on compressed air is ensured; when the adsorbent is not added, gas (or hot dry air) in the backflow cavity can be smoothly sent into the container body, so that the drying effect on the adsorbent is ensured;

5) The air inlet unit is arranged in the second inner cavity and can be used for increasing the air inlet area and ensuring the backflow stability of the backflow cavity, namely, when compressed air is adsorbed, the plc motor can drive each cover body to stretch and expose the filter holes on the outer wall of each cover body, so that the air inlet surface is increased and the air inlet efficiency is ensured; it should be noted that: the section diameter of each cover body is gradually reduced, namely: the diameter of the section of the cover body positioned at the innermost circle is the smallest, and the diameter of the section of the cover body fixed with the bottom of the second inner cavity is the largest, so that the resistance of the adsorbent to the cover body can be reduced when the cover body is reset and unfolded, and meanwhile, the damage to the adsorbent is also reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of embodiment 1 of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is a schematic structural diagram of embodiment 2 of the present invention;

FIG. 4 isbase:Sub>A sectional view taken along line A-A of FIG. 3;

fig. 5 is a schematic structural diagram of a material replenishing assembly in embodiment 2 of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-2, the present invention discloses a compressed air drying system, which comprises an outer body 1 having a first inner cavity 10, an inner body 2 disposed in the first inner cavity 10 and having a second inner cavity 20, and a discharge part 3 mounted on the outer body 1, wherein the discharge part 3 has at least one discharge cavity 30 communicating with the inner body 2, a control valve 31 is mounted in the discharge cavity 30, a return cavity is formed between the inner body 2 and the outer body 1, a return port 21 communicating with the return cavity is provided on the inner body 2, the inner body 2 has an air inlet part and an exhaust gas outlet part, and an adsorbent 22 and a retractable air inlet unit 70 are disposed in the second inner cavity 20; the air inlet part and the exhaust gas outlet part both comprise an air pipe 40 communicated with the second inner cavity 20 and an electromagnetic valve 41 arranged on the air pipe 40, and the input end of the air inlet unit 70 is communicated with the air pipe 40 and can be expanded when the air is introduced into the second inner cavity 20 to increase the air outlet surface.

In an embodiment of the present invention, the air inlet unit 70 includes a plc motor 700 installed at the bottom of the second inner cavity 10, a lead screw 701 driven by the plc motor 700, a lead screw seat 702 disposed on the lead screw 701 and engaged therewith, and an air outlet cover, wherein the air outlet cover includes a plurality of covers 703 whose cross-sectional diameters are gradually reduced from an extending direction of the lead screw 701 and whose surfaces are provided with filter holes 704, the filter holes on the covers 703 form the air outlet surface, each cover 703 is disposed coaxially and slidably connected, a first limit ring 705 is disposed at a top position of an inner wall of the cover 703, a second limit ring 706 engaged with the first limit ring 705 is disposed at a bottom position of an outer wall of the cover 703, the cover 703 located at the most inner ring is provided with a through hole for the lead screw 701 to pass through, and the cover 703 is connected with the lead screw seat 702.

In the embodiment of the present invention, the input ends of the air pipes 40 may be both communicated with the center of the bottom of the second inner cavity 10, and may supply air into the housing 703.

Referring to fig. 1, in this embodiment, air to be dried may enter the inner body through an air pipe of the air inlet portion, at this time, an electromagnetic valve of the air inlet portion is opened, an electromagnetic valve of the exhaust gas exhaust portion is closed, at this time, compressed air enters the inner body through the air pipe, is exhausted into the exhaust chamber after being treated by an internal adsorbent (which may be a desiccant, the same applies below) therein, and is exhausted through the exhaust chamber, thereby completing drying, a portion of air may enter the backflow chamber (i.e., the first inner chamber) through a backflow port, while cleaning the adsorbent, the electromagnetic valve of the air inlet portion may be closed, the electromagnetic valve of the exhaust gas exhaust portion may be opened, and a control valve may be closed, and the air in the backflow chamber may enter the second inner chamber through the backflow port and water molecules in the inner chamber may be exhausted from the air pipe of the exhaust gas exhaust portion, and at the time of exhausting, the air may be exhausted at an output end of the exhaust gas exhaust portion by using an air pump as appropriate;

it is worth mentioning that:

in this embodiment, when compressed air is processed, the plc motor may be used to drive the lead screw and drive the lead screw base to ascend, and extend each cover body, so as to expose the filter holes on the outer wall of each cover body, and further increase the gas outlet surface, and meanwhile, when the cover bodies are extended, the horizontal surface of the adsorbent in the second inner cavity rises, so that the gas entering the second inner cavity from the lowest filter hole can increase the gas adsorption exposure, thereby ensuring the adsorption effect on the part of compressed air, and after the compressed air is completely treated, the plc motor may be used to control the lead screw base to descend and drive each cover body to reset;

moreover, the filtration pore aperture of each cover body of this embodiment can also dwindle gradually from the most inboard to the outside, and it can act as a plurality of layers of filter layer uses when each cover body contracts, filters the impurity that compressed air got into the second inner chamber, and is expanding for improve compressed air's the efficiency of admitting air, improve adsorption efficiency.

Example 2, the difference from example 1 is that:

as shown in fig. 3 to 5, in the embodiment of the present invention, the inner body 2 includes a base 201 rotatably connected to the bottom of the first chamber 10 by a rotation shaft 200 and controlled by a driving part, and a container body 202 mounted on the base 201; a main cavity 203 coaxially arranged with the base 201 and a plurality of auxiliary cavities 204 circumferentially distributed at intervals by taking the main cavity 203 as a center are formed in the base 201, one end of each auxiliary cavity 204 is communicated with the main cavity 203, the other end of each auxiliary cavity 204 extends to the top end face of the base 201, and a one-way valve 205 is installed in each auxiliary cavity 204; the container body 202 is internally provided with an adsorption cavity 202a, the cross-sectional area of the adsorption cavity 202a is gradually enlarged from top to bottom, and the inner wall of the adsorption cavity 202a is provided with a plurality of clearance grooves 202b which are circumferentially distributed and axially extend and correspond to the auxiliary cavities 204 one by one; the top end of the container body 202 is provided with an air outlet pipe 206 communicating the adsorption cavity 202a and the discharge cavity 30, any end of the air outlet pipe 206 is rotatably connected with the container body 202 or the discharge part 30, and the container body 202 is provided with the return opening 21.

In an embodiment of the present invention, the container body 202 is formed by a plurality of arc-shaped plates 202c connected in series, each arc-shaped plate 202c protrudes inward in a radial direction of the container body 202, and a gap formed between adjacent arc-shaped plates 202c is the gap groove 202b.

In the embodiment of the present invention, the rotating shaft 200 has an axially extending cavity 200a with two ends respectively penetrating through two ends of the rotating shaft 200, one end of the cavity 200a is communicated with the main cavity 203, bearings 40a are respectively disposed at the other end of the rotating shaft 200 and the matching position of the rotating shaft 200 and the outer body, the other end of the rotating shaft 200 is matched with the air pipe through the bearings 40a, the air pipe includes a main air pipe 400 rotatably connected with the rotating shaft 200 through the bearings 40a, and an air inlet pipe 401 and an exhaust air pipe 402 respectively communicated with the main air pipe 400, the electromagnetic valve 41 is disposed on the air inlet pipe 401 and the exhaust air pipe 402, the air inlet pipe 401, the main air pipe 400 and the electromagnetic valve 41 constitute the air inlet portion, and the exhaust air pipe 402, the main air pipe 401 and the electromagnetic valve 41 constitute the exhaust air outlet portion.

In a specific embodiment of the present invention, the driving portion includes a first driving wheel 51 mounted on the rotating shaft 200, synchronizing wheels 52 circumferentially spaced around the rotating shaft 200, and a second driving wheel 55 connected to any synchronizing wheel 52 through a transmission shaft 53 and driven by a motor 54, wherein a transmission belt 56 is connected between the first driving wheel 51 and the second driving wheel 55 in a transmission manner, a synchronizing belt 57 is connected between each synchronizing wheel 52 in a transmission manner, and an air injection portion 58 located between adjacent synchronizing wheels 52 is mounted on the synchronizing belt 57.

In the embodiment of the present invention, the air injection part 58 includes support parts 580 installed on the timing belt 57 and disposed to be hollow and extended radially toward the inner body 2, a nozzle 581 installed on each support part 580, and an air supply source for supplying hot dry air to the support parts 580; an annular sliding rail 582 is arranged in the first inner cavity 10, and a telescopic rod 583 matched with the annular sliding rail 582 is arranged on the supporting part 580.

In the embodiment of the present invention, the material replenishing assembly 6 is further included, and the material replenishing assembly 6 is mounted on the backflow port 21, and the material replenishing assembly 6 includes a main body 60, a material passage 61 formed in the main body 60 and having an output end 61a and an input end 61b, at least one auxiliary material inlet 62 arranged on the main body 60 and communicated with the material passage 61, at least one partition block 63 arranged in the material passage 61 and dividing the material passage 61 into a plurality of auxiliary material cavities, an opening 630 arranged on the partition block 63, and a plurality of pistons 64 arranged in the auxiliary material cavities and used for closing the auxiliary material inlets 62 or the openings 630 and controlled by an electromagnetic assembly.

In the embodiment of the present invention, the spacer 63 includes a spacer body 631 having the opening 630 and spaced apart from the top of the material channel 61 and the bottom of the material channel 61, and sealing blocks 632 connected to two ends of the spacer body 631 and respectively connected to the top of the material channel 61 and the bottom of the material channel 61 in a sealing manner; the opening 630 is coaxially arranged with the auxiliary material inlet 62; the electromagnetic assembly 65 includes a piston rod 650 having one end passing through the opening 630 and one end positioned between the opening 630 and the auxiliary material inlet 62, and an electromagnet 651 for controlling the movement of the piston 650.

In the embodiment of the present invention, the electromagnet 651 includes an iron core 6510, a coil 6511, and a return spring 6512.

In addition, the embodiment further provides a method for drying compressed air, which uses the above-mentioned compressed air drying system, and is characterized by comprising the following steps:

s2: then, a plc motor drives a screw rod and drives a screw rod seat to ascend on the screw rod, and drives a cover body located at the innermost circle to ascend, and meanwhile, as the cover body is matched with a second limiting ring through a first limiting ring, when the cover body located at the innermost circle ascends, the cover bodies are driven to ascend and sequentially expand, gas entering an air inlet unit can be discharged through filter holes in the cover bodies, the air outlet efficiency is improved, and the gas is adsorbed by an adsorbent;

Referring to fig. 3-5, the principle and advantages of the present embodiment are:

first, referring to fig. 3, in this embodiment, during air intake, the electromagnetic valve on the air intake pipe is opened, the electromagnetic valve on the exhaust gas discharge pipe is closed, and the control valve is opened, so that compressed air enters the container body from the air intake pipe, the main air pipe, and the main cavity (the base may be connected with a filter element which is communicated with the main cavity and can filter the compressed air entering the container body), and after being adsorbed by an adsorbent (which may be a desiccant, the same below), a part of the compressed air is discharged through the air outlet pipe, and a part of the compressed air enters the backflow cavity through the backflow port;

when cleaning, the electromagnetic valve on the air inlet pipe is closed, the electromagnetic valve on the waste gas discharge pipe is opened, the control valve is closed, the dry gas in the backflow cavity enters the container body and is further discharged through the auxiliary cavity, the main cavity and the waste gas discharge cavity, and water molecules contained in the adsorbent are separated in the exhaust process, so that the service life of the adsorbent and the long-time filtering effect are ensured;

meanwhile, as shown in fig. 2, the motor can be used to drive the container body to rotate, and the motor can control the second transmission wheel to rotate and drive the second transmission wheel to rotate, so as to drive the base to rotate, so as to drive the container body to rotate, when the container body rotates, water molecules in the adsorbent can be separated by centrifugal force, and because of the shape of the container body which is gradually reduced from top to bottom and the clearance groove formed inside the container body, the water molecules can be guided to the auxiliary cavity along the clearance groove and are discharged from the exhaust gas discharge pipe by air, when the content of water molecules in the adsorbent is too high, the method can be used;

in addition, in order to further improve the drying effect on the adsorbent, in this embodiment, the external hot dry air can be sent to each nozzle through an air supply source (which may be an air pump, and an air pump can be installed on the exhaust gas discharge pipe), and the synchronous wheel is driven to rotate by matching with the motor, the synchronous wheel drives the supporting part to move, the air jet matched with the nozzle can form a rotational flow in the backflow cavity, the rotational flow is used to accelerate the flow of hot air in the backflow cavity and dry the container body, and the adsorbent discharged (or overflowed) from the backflow port can be lifted and sent into the container body again through the backflow port, so that the cleaning of the backflow cavity and the heating of the container body can be completed, while in this embodiment, the container body and the drainage part can be driven to move by using one motor at the same time, so that the energy consumption is reduced;

secondly, the embodiment can control the supporting part to move around the container body under the condition of not influencing the normal air supply of the supporting part, and because the transmission track of the synchronous belt is rectangular and the rotation track of the container body is circular, the operation of the synchronous belt and the container body can generate difference under the premise that the synchronous belt and the container body are driven by one motor, the appearance of the container body can be cleaned by utilizing a nozzle, the differential speed of the synchronous belt and the container body can be realized by the diameter of the first driving wheel and the second driving wheel, and the supporting part can move more stably due to the matching of the telescopic rod and the annular slide rail;

thirdly, in order to add an adsorbent (a drying agent or other adsorption aids) into the container body conveniently, and various adsorbents can be installed at each auxiliary material inlet by using the container, when new aids are required to be added into the container body, the electromagnet is electrified, the structure of the electromagnet can be any existing structure, and the purpose of the electromagnet is to control the movement of the piston rod, preferably, the electromagnet is in the form of the embodiment (the electromagnet of the embodiment, when the coil is powered off, the auxiliary material inlet can be sealed by using a spring, certain energy can be saved), when the coil is powered on, the iron core generates magnetism and attracts the piston rod to descend, and then the auxiliary material inlet is released and the opening is blocked, at the moment, the air suction pump sucks air at the waste gas discharge pipe, the container body generates negative pressure, the aids at the auxiliary material inlet are sucked into the container body by using the negative pressure to complete addition, and the embodiment can also be that when the piston rod descends, the auxiliary material inlet is opened, the electromagnet is powered off, the piston seals the auxiliary material inlet and opens the opening, at the moment, because the air is supplied into the return cavity, the gas enters the input end of the material channel and pushes the aids into the container body, so as to complete the addition;

in this embodiment, new auxiliary agents can be selectively added by controlling the energization of each corresponding electromagnet, and when the new auxiliary agents are added into the container body, the container body can be in a rotating state, in which the new auxiliary agents can be more easily mixed with the original adsorbent, so as to ensure the adsorption effect of the adsorbent on the compressed air;

the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A compressed air drying system characterized by: the exhaust device comprises an outer body (1) with a first inner cavity (10), an inner body (2) arranged in the first inner cavity (10) and provided with a second inner cavity (20), and an exhaust part (3) arranged on the outer body (1), wherein the exhaust part (3) is at least provided with an exhaust cavity (30) communicated with the inner body (2), a control valve (31) is arranged in the exhaust cavity (30), a backflow cavity is formed between the inner body (2) and the outer body (1), a backflow port (21) communicated with the backflow cavity is arranged on the inner body (2), the inner body (2) is provided with an air inlet part and an exhaust gas outlet part, and an adsorbent (22) and a retractable air inlet unit (70) are arranged in the second inner cavity (20); the air inlet part and the waste gas exhaust part respectively comprise an air pipe (40) communicated with the second inner cavity (20) and an electromagnetic valve (41) arranged on the air pipe (40), the input end of the air inlet unit (70) is communicated with the air pipe (40), and the air inlet unit can be expanded when air is introduced into the second inner cavity (20) and used for increasing the air outlet surface;

the air inlet unit (70) comprises a plc motor (700) arranged at the bottom of the second inner cavity (20), a lead screw (701) driven by the plc motor (700), a screw rod seat (702) arranged on the lead screw (701) and matched with the lead screw (701), and an air outlet cover, wherein the air outlet cover comprises a plurality of cover bodies (703) with gradually reduced section diameters from the extending direction of the lead screw (701) and provided with filter holes (704) on the surfaces, the filter holes on the cover bodies (703) form the air outlet surface, each cover body (703) is coaxially arranged and slidably connected, a first limiting ring (705) is arranged at the top of the inner wall of the cover body (703), a second limiting ring (706) matched with the first limiting ring (705) is arranged at the bottom of the outer wall of the cover body (703), a through hole for the lead screw (701) to pass through is arranged on the cover body (703) at the innermost ring, and the cover body (703) is connected with the screw rod seat (702).

2. A compressed air drying system according to claim 1, wherein: the inner body (2) comprises a base (201) which is rotatably connected to the bottom of the first inner cavity (10) through a rotating shaft (200) and is controlled by a driving part, and a container body (202) which is arranged on the base (201); a main cavity (203) coaxially arranged with the base (201) and a plurality of auxiliary cavities (204) circumferentially distributed at intervals by taking the main cavity (203) as a center are formed in the base (201), one end of each auxiliary cavity (204) is communicated with the main cavity (203), the other end of each auxiliary cavity (204) extends to the top end face of the base (201), and a one-way valve (205) is installed in each auxiliary cavity (204); the container body (202) is internally provided with an adsorption cavity (202 a), the cross section area of the adsorption cavity (202 a) is gradually enlarged from top to bottom, and the inner wall of the adsorption cavity (202 a) is provided with a plurality of clearance grooves (202 b) which are circumferentially distributed and axially extend and correspond to the auxiliary cavities (204) one by one; the top end of the container body (202) is provided with an air outlet pipe (206) communicated with the adsorption cavity (202 a) and the discharge cavity (30), and any end of the air outlet pipe (206) is connected with the container body

The container body (202) or the discharge part (30) is rotationally connected, and the container body (202) is provided with the return opening (21).

3. A compressed air drying system according to claim 2, wherein: the container body (202) is composed of a plurality of arc-shaped plates (202 c) which are connected in sequence, each arc-shaped plate (202 c) protrudes inwards along the radial direction of the container body (202), and a gap formed between every two adjacent arc-shaped plates (202 c) is the gap groove (202 b).

4. A compressed air drying system according to claim 2 or 3, wherein: the rotating shaft (200) is internally provided with a cavity (200 a) which extends axially and two ends of which respectively penetrate through two ends of the rotating shaft (200), one end of the cavity (200 a) is communicated with the main cavity (203), bearings (40 a) are respectively arranged at the other end of the rotating shaft (200) and the matching position of the rotating shaft (200) and the outer body, the other end of the rotating shaft (200) is matched with the air pipe through the bearings (40 a), the air pipe comprises a main air pipe (400) which is rotatably connected with the rotating shaft (200) through the bearings (40 a), an air inlet pipe (401) and an exhaust gas outlet pipe (402) which are respectively communicated with the main air pipe (400), the electromagnetic valve (41) is respectively arranged on the air inlet pipe (401) and the exhaust gas outlet pipe (402), the air inlet pipe (401), the main air pipe (400) and the electromagnetic valve (41) form an air inlet part, and the exhaust gas outlet pipe (402), the main air pipe (401) and the electromagnetic valve (41) form an exhaust gas outlet part.

5. A compressed air drying system according to claim 2 or 3, wherein: the driving part comprises a first driving wheel (51) arranged on the rotating shaft (200), synchronizing wheels (52) arranged on the rotating shaft (200) in the circumferential direction at intervals and a second driving wheel (55) which is connected with any synchronizing wheel (52) through a transmission shaft (53) and driven by a motor (54), wherein a transmission belt (56) is connected between the first driving wheel (51) and the second driving wheel (55), a synchronizing belt (57) is connected between each synchronizing wheel (52), and an air injection part (58) positioned between adjacent synchronizing wheels (52) is arranged on the synchronizing belt (57).

6. A compressed air drying system according to claim 5, wherein: the air injection part (58) comprises supporting parts (580) which are installed on the synchronous belt (57), arranged in a hollow way and radially extend towards the inner body (2), nozzles 581 which are installed on the supporting parts (580), and an air supply source which is used for providing hot dry air for the supporting parts (580); an annular sliding rail (582) is arranged in the first inner cavity (10), and a telescopic rod (583) matched with the annular sliding rail (582) is arranged on the supporting part (580).

7. A compressed air drying system according to claim 6, wherein: still including install in material replenishment subassembly (6) on backward flow mouth (21), material replenishment subassembly (6) include main part (60), form in main part (60) and have material passageway (61) of output (61 a) and input (61 b), at least one locate on main part (60) and with auxiliary material entry (62), at least one of material passageway (61) intercommunication are located in material passageway (61) and divide material passageway (61) into spacer block (63) in a plurality of auxiliary material chamber, locate opening (630) and a plurality of on spacer block (63) are located the auxiliary material intracavity is used for sealing auxiliary material entry (62) or opening (630) and piston (64) through the control of electromagnetic component.

8. A compressed air drying system according to claim 7, wherein: the separation block (63) comprises a separation block body (631) which is provided with the opening (630) and is arranged at intervals with the top of the material channel (61) and the bottom of the material channel (61), and sealing blocks (632) which are connected with two ends of the separation block body (631) and are respectively connected with the top of the material channel (61) in a sealing manner and the bottom of the material channel (61) in a sealing manner; the opening (630) and the auxiliary material inlet (62) are coaxially arranged; the electromagnetic assembly (65) comprises a piston rod (650) with one end penetrating through the opening (630) and one end positioned between the opening (630) and the auxiliary material inlet (62), and an electromagnet (651) for controlling the movement of the piston (650).

9. A method of drying compressed air using the compressed air drying system according to claim 8, comprising the steps of:

s4: after drying is finished, opening the electromagnetic valve on the waste gas discharge pipe, closing the electromagnetic valve on the gas inlet pipe and the control valve on the discharge cavity, and at the moment, gas in the backflow cavity enters the second inner cavity again through the backflow port and water molecules in the second inner cavity are discharged from the waste gas discharge pipe, so that self-cleaning of the adsorbent is finished; meanwhile, the screw rod is driven by a plc motor and drives the screw rod seat to descend on the screw rod, the cover bodies positioned at the innermost circle descend due to the gravity of each cover body, and each cover body is contracted, so that the gas in the backflow cavity can conveniently flow back to the second inner cavity; in step S4, firstly, the motor drives the second driving wheel and any synchronizing wheel to rotate forward, and drives the first driving wheel to rotate through the driving belt and drives each synchronizing wheel to rotate through the synchronizing belt, so as to drive the container body to rotate, and when the centrifugal force generated by the rotation of the container body is utilized to guide water molecules to the inner wall of the container body and introduce hot air into the container body at the backflow port, the water molecules can be discharged from the clearance groove and the auxiliary cavity, and simultaneously when the synchronizing belt moves, the support body portion is driven to move, the nozzles on the support portion provide hot dry air through the air supply source, and the hot dry air generates rotational flow under the movement of the support body to dry the container body, so as to further discharge the water molecules contained in the adsorbent; and then the motor is utilized to drive the second driving wheel and any synchronous wheel to rotate reversely, the electromagnet is electrified while rotating reversely, the piston is enabled to descend to open the auxiliary material inlet, new drying agent enters the material channel from the auxiliary material inlet, and the new drying agent is replenished into the container body when gas flows in the material channel.